Finding Missing Angles in Triangles

What is the sum of the interior angles of any triangle?

• 270 degrees

• 180 degrees

• 90 degrees

• 360 degrees

Tags

CCSS.8.G.A.5

If a triangle has angles of 50 degrees and 60 degrees, what is the measure of the third angle?

• 100 degrees

• 70 degrees

• 80 degrees

• 90 degrees

Tags

CCSS.8.G.A.5

Which of the following is true about the sum of the interior angles of a triangle?

• It varies with the type of triangle

• It is always 360 degrees

• It is always 180 degrees

• It depends on the size of the triangle

Tags

CCSS.8.G.A.5

Given a triangle with angles 62 degrees and 74 degrees, what is the measure of the third angle?

• 64 degrees

• 54 degrees

• 74 degrees

• 44 degrees

Tags

CCSS.8.G.A.5

If a triangle has one angle of 90 degrees and another angle of 26 degrees, what is the measure of the third angle?

• 84 degrees

• 74 degrees

• 64 degrees

• 32 degrees

Tags

CCSS.8.G.A.5

What is the measure of an exterior angle of a triangle if the two non-adjacent interior angles are 35 degrees and 73 degrees?

• 128 degrees

• 108 degrees

• 118 degrees

• 98 degrees

Tags

CCSS.8.G.A.5

Which angles are considered non-adjacent to an exterior angle in a triangle?

• All interior angles

• None of the interior angles

• The angles that do not share a side with the exterior angle

• The angles that share a side with the exterior angle

Tags

CCSS.8.G.A.5

If the exterior angle of a triangle is 110 degrees and one of the non-adjacent interior angles is 80 degrees, what is the measure of the other non-adjacent interior angle?

• 30 degrees

• 50 degrees

• 40 degrees

• 20 degrees

Tags

CCSS.8.G.A.5

What is the relationship between an exterior angle and the two non-adjacent interior angles of a triangle?

• The exterior angle is equal to the quotient of the two non-adjacent interior angles

• The exterior angle is equal to the difference of the two non-adjacent interior angles

• The exterior angle is equal to the sum of the two non-adjacent interior angles

• The exterior angle is equal to the product of the two non-adjacent interior angles

Tags

CCSS.8.G.A.5

If the sum of two interior angles of a triangle is 95 degrees, what is the measure of the exterior angle adjacent to the third interior angle?

• 85 degrees

• 95 degrees

• 115 degrees

• 105 degrees

Tags

CCSS.8.G.A.5